Robert.Taylor@circle.UUCP (Robert Taylor) (11/05/89)
Brad,
I have run into trouble with my newly finished FRANCES memory
expansion board. The system boots fine with the LUCAS/FRANCES
combination installed, but there is an addressing problem when accessing
the FRANCES memory. After doing a modeload, I use the Aztec DB debugger
to check out the memory. The data I enter is fine, but storing a byte at
say $400000 causes the same byte to appear at $400000, $400040, $400080,
and $4000c0. By my figures this should mean something is wrong on A6 and
A7 or with MQ1. I can find no shorts or the like. Using a logic probe
shows activity on all of these lines. I'm baffled. Anything you can add
would help. Thanks. Robert Taylor
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